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How to Fix Nginx Redirect Loop from HTTP to HTTPS - Resolve Cloudflare 521 Error on Apache-Fix Virtual Environment Not Activating in Terminal

Updated 2026-07-28 23:46:30browser-issues
How to Fix Nginx Redirect Loop from HTTP to HTTPS - Resolve Cloudflare 521 Error on Apache-Fix Virtual Environment Not Activating in Terminal
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.